CN114434726B - Bionic molding die, integral injection molding method and bionic centrifugal wind wheel - Google Patents
Bionic molding die, integral injection molding method and bionic centrifugal wind wheel Download PDFInfo
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- CN114434726B CN114434726B CN202210050958.6A CN202210050958A CN114434726B CN 114434726 B CN114434726 B CN 114434726B CN 202210050958 A CN202210050958 A CN 202210050958A CN 114434726 B CN114434726 B CN 114434726B
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- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 236
- 238000000465 moulding Methods 0.000 title claims abstract description 62
- 238000001746 injection moulding Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims description 32
- 241000272168 Laridae Species 0.000 claims description 28
- 238000004513 sizing Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 238000005728 strengthening Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 12
- 230000003014 reinforcing effect Effects 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 230000009467 reduction Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- DOSMHBDKKKMIEF-UHFFFAOYSA-N 2-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]-5-[3-[3-[4-(1-methylindol-3-yl)-2,5-dioxopyrrol-3-yl]indol-1-yl]propylsulfamoyl]benzenesulfonate Chemical compound C1=CC(=[N+](CC)CC)C=C2OC3=CC(N(CC)CC)=CC=C3C(C=3C(=CC(=CC=3)S(=O)(=O)NCCCN3C4=CC=CC=C4C(C=4C(NC(=O)C=4C=4C5=CC=CC=C5N(C)C=4)=O)=C3)S([O-])(=O)=O)=C21 DOSMHBDKKKMIEF-UHFFFAOYSA-N 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 2
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- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/03—Injection moulding apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a bionic molding die, an integral injection molding method and a bionic centrifugal wind wheel, wherein the bionic molding die comprises a wheel disc molding part, a wheel cover molding part and a plurality of bionic blade molding parts, the direction from the wheel disc molding part to the wheel cover molding part of the bionic blade molding part sequentially comprises a first sliding block, a second sliding block, a third sliding block and a limiting guide post which are connected with each other in a sliding manner, the wheel disc molding part, the first sliding block, the second sliding block and the wheel cover molding part form a molding space, the bionic blade molding part further comprises a first driving part, a second driving part and a third driving part which are respectively connected with the first sliding block, the second sliding block and the third sliding block, and the axis of the limiting guide post and the axis of the bionic centrifugal wind wheel are in different-plane straight lines. The invention has the beneficial effects that: the bionic centrifugal wind wheel can be integrally injection molded, the molding space is increased, the molding process period is short, the production efficiency is improved, the structural strength is ensured, the material consumption is reduced, the production cost is reduced, and the high-efficiency low-noise characteristic of the centrifugal wind wheel is realized.
Description
Technical Field
The invention relates to the technical field of wind wheel processing, in particular to an integral injection molding method and a bionic centrifugal wind wheel thereof.
Background
The centrifugal wind wheel is a wind wheel which uses centrifugal force to do work to enable air to increase pressure, the metal centrifugal wind wheel adopts metal equal-thickness plates for blades, pneumatic efficiency and noise are inferior to those of the plastic centrifugal wind wheel, however, in order to ensure manufacturability of demolding, the current plastic centrifugal wind wheel adopts an up-down demolding mode and a welding mode, so that blade profile design of the plastic centrifugal wind wheel cannot be too complex, two-dimensional change can only be realized in X direction and Y direction on a horizontal plane, three-dimensional change in X direction, Y direction and Z direction on a space cannot be realized, along with research and development of a bionic technology, the bionic blade can realize high efficiency and low noise of the centrifugal wind wheel, but is of a three-element blade type, namely, the bionic blade has change in X direction, Y direction and Z direction on the space and is limited by the current demolding mode, and production of the bionic centrifugal wind wheel has obstacle.
Disclosure of Invention
In order to solve the technical problems, one of the purposes of the invention is to provide a bionic molding die applied to a bionic centrifugal wind wheel, which comprises a wheel disc molding piece, a wheel cover molding piece and a plurality of blade bionic molding pieces.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The bionic molding die comprises a wheel disc molding piece, a wheel cover molding piece and a plurality of bionic blade molding pieces, wherein the wheel disc molding piece and the wheel cover molding piece are arranged at intervals, the wheel disc molding piece is provided with a plurality of glue inlets which are arranged at intervals in the circumferential direction, and the bionic blade molding pieces are arranged between the wheel disc molding piece and the wheel cover molding piece and are arranged at intervals in the circumferential direction;
The bionic blade forming part sequentially comprises a first sliding block, a second sliding block, a third sliding block and a limiting guide post which are connected in a sliding manner in the direction from the wheel disc forming part to the wheel cover forming part, the wheel disc forming part, the first sliding block, the second sliding block and the wheel cover forming part form a forming space of the bionic centrifugal wind wheel, the bionic blade forming part further comprises a first driving part, a second driving part and a third driving part which are respectively connected with the first sliding block, the second sliding block and the third sliding block, and the axis of the limiting guide post and the axis of the bionic centrifugal wind wheel are in different-plane straight lines.
Preferably, the bionic centrifugal wind wheel comprises a plurality of mounting holes arranged at intervals along the circumferential direction, the diameter of the center of the glue inlet is smaller than that of the center of the mounting hole, and the arrangement is such that the formed bionic centrifugal wind wheel is located at the weak position of the glue inlet and is far away from the mounting stress position of the mounting hole as far as possible, so that the bionic centrifugal wind wheel is prevented from being located at the weak position of the glue inlet during mounting, and overlarge stress is caused, thereby damaging the bionic centrifugal wind wheel.
Preferably, the wheel cover forming part is provided with a plurality of jacking blocks which are arranged at intervals along the circumferential direction, the jacking blocks are arranged between two adjacent glue inlets along the circumferential direction, and the jacking blocks are provided with vent holes, so that the vent holes are arranged at the positions of the melting lines at the glue inlet ends, and the vent holes can discharge the gas displaced by the glue in the flowing process of the glue, so that the glue flows more smoothly, the glue at the positions of the melting lines at the glue inlet ends can be well fused into a whole, and the strength of the bionic centrifugal wind wheel at the positions of the melting lines is improved; if the vent holes are not formed, gas is continuously accumulated in the flowing process of the sizing material, when the sizing material flows to the welding line position of the sizing material feeding end, the sizing material cannot be fused at the welding line position of the sizing material feeding end under the influence of gas pressure, so that the strength of the bionic centrifugal wind wheel at the welding line position is reduced.
The second object of the invention is to provide an integral injection molding method of the bionic centrifugal wind wheel, which adopts the bionic molding die to carry out integral injection molding, and the integral injection molding method comprises the following steps:
Step 1: injecting sizing material from the sizing inlet;
Step 2: after the sizing material is cooled, a bionic centrifugal wind wheel is formed, the bionic centrifugal wind wheel comprises a wheel cover, a wheel disc and a plurality of bionic blades which are arranged between the wheel cover and the wheel disc at intervals along the circumferential direction, in the section perpendicular to the axis of the bionic centrifugal wind wheel, the tangent line of the front edge of the bionic blade attached to the suction surface along the outward direction of the suction surface is a direction A, the point of the side surface attached to the suction surface, which is closest to the axis of the bionic centrifugal wind wheel, of the first slider is an inner side point a1, the point of the side surface attached to the suction surface, which is closest to the axis of the bionic centrifugal wind wheel, is an inner side point a2, the circle where the inner side point a1 is located is a circle O1, the contact point of the first slider, which is farthest from the axis of the centrifugal wind wheel, is a contact point b, the circle where the contact point b is located is a circle O2, the intersection point of the direction A and the circle O2 is k1, the foot of the direction A is k2, the distance between the inner side point a1 and k1 is R1, the distance between the inner side point a1 and the distance between the first slider and the first wheel is the first driving direction L1 and the distance L1 is the driving direction L1;
Step 3: after the first sliding block moves by a distance L1, in a cross section perpendicular to the axis of the bionic centrifugal wind wheel, the inner point a1 intersects with a suction surface at a point c along a straight line perpendicular to the direction A, the distance between the inner point a1 and the c is W1, a circle where the inner point a1 is located is a circle O3, the distance between the inner point a1 and k1 is R3, an included angle between the projection of the direction B in the cross section and the straight line perpendicular to the direction A is alpha 2, an included angle between the projection of the direction A in the plane Z and the bionic centrifugal wind wheel axis is alpha 1, and the projection of the direction B in the plane Z and the bionic centrifugal wind wheel axis is 0.6X [ (R2-R1)/H1 ] < tan alpha 1 [ (R2-R1)/H1 ], 0.8X (R3/W1) < tan alpha 2.5X (R3/W1), and the third sliding block is driven by the third sliding block;
Step 4: after the first slider, the second slider and the third slider move by a distance L2, a circle corresponding to the outer diameter of the bionic centrifugal wind wheel is a circle O4, a circle where the inner side point a2 is located is a circle O5, an intersection point of the direction A and the circle O4 is k3, the distance between the inner side point a2 and the k3 is R4, and the second driving piece drives the second slider and the first slider to move by a distance L3 along the direction A;
Step 5: and taking down the bionic centrifugal wind wheel.
Preferably, the L1 is more than or equal to 0.8×R1 and less than or equal to 1.2×R1, the L2 is more than or equal to 0.8×H2 and less than or equal to 1.2×H2 and less than or equal to 0.8×R4 and less than or equal to 1.5×R4, by the arrangement, in the step 2, the moving process of the first sliding block is ensured to leave the bionic blade initially, in the step 3, the situation that collision interference is caused between the moving process of the first sliding block and the wheel disc is avoided, and in the step 4, the first sliding block and the second sliding block are ensured to be completely separated from the bionic centrifugal wind wheel.
As the preference, bionical forming die still is equipped with rim plate water route, bionical blade water route and the wheel cap water route that connects in parallel and sets up, at step 1 the in-process of injecting into the sizing material, the rim plate water route bionical blade water route with water is led to in the wheel cap water route, just the rim plate water route bionical blade water route reaches the temperature in the wheel cap water route rises in proper order, through setting up like this, along with the sizing material flows, the sizing material is from advancing the glue mouth to advancing the terminal temperature of gluing and gradually decline, thereby leads to mobility to reduce the effect of moulding plastics, in order to guarantee the mobility of sizing material, the rim plate water route bionical blade water route reaches the temperature in the wheel cap water route is separately controlled, thereby keeps the mobility of sizing material guarantees the effect of moulding plastics to realize that product inside temperature is even, reduces the deflection, reduces the internal stress.
The third object of the invention is to provide a bionic centrifugal wind wheel, which is manufactured by the integral injection molding method, and comprises a wheel cover, a wheel disc and a plurality of bionic blades, wherein the tops of the bionic blades are connected with the wheel cover, the blade roots of the bionic blades are connected with the wheel disc, and the bionic blades are arranged at intervals along the circumferential direction of the wheel disc;
the bionic blade comprises a blade top, a blade root, a first tail airfoil blade profile, a gull airfoil blade profile and a second tail airfoil blade profile, wherein the blade profile of the bionic blade sequentially comprises the first tail airfoil blade profile, the gull airfoil blade profile and the second tail airfoil blade profile from the blade top to the blade root along the axial direction, the thickness of the bionic blade is increased from the front edge to the rear edge and then reduced, the maximum thickness of the bionic blade is positioned at the chord length of the bionic blade from the front edge to the rear edge in the chord length direction of 20% -50%, and the front edge thicknesses of the first tail airfoil blade profile and the second tail airfoil blade profile are both greater than the front edge thickness of the gull airfoil blade profile.
Preferably, the thickness of the first owl wing profile and the second owl wing profile is the greatest and is respectively located at the chord length of the first owl wing profile and the second owl wing profile from the front edge to the rear edge by 20% -30%, by the arrangement, at the positions near the wheel cover and the wheel disc, the first owl wing profile and the second owl wing profile can effectively reduce the generation and development of vortex in a runner, and reduce the pressure arteries of the front edges of the first owl wing profile and the second owl wing profile, so that the bionic centrifugal wind wheel noise can be reduced, and the thickness of the front edges of the first owl wing profile and the second owl wing profile near the front edges is thicker, namely the joint area of the front edges of the bionic blades, the wheel cover and the wheel disc is increased, the strength of the connection of the front edges of the bionic blades, the wheel cover and the wheel disc is improved, and the stress concentration is reduced, and the equivalent stress of the front edges of the bionic blades, the front edges, the bionic blades and the bionic blades, the bionic blades and the wheel cover and the wheel disc are connected, and the equivalent stress-reducing structures are reduced by 9.29%.
Preferably, the maximum thickness of the gull wing profile is located at a chord length of 30% -50% of the direction from the front edge to the rear edge of the gull wing profile along the chord length, and by the arrangement, the gull wing profile has high lift in the middle of a runner of the bionic centrifugal wind wheel, and the suction surface of the gull wing profile can not generate flow separation and vortex, so that the efficiency of the bionic centrifugal wind wheel can be improved.
Preferably, the trailing edge molded line of the bionic blade is in a C shape, so that the integral structural strength of the bionic centrifugal wind wheel can be further enhanced, the deformation of the trailing edge of the bionic blade can be reduced, the pneumatic performance of the bionic centrifugal wind wheel is prevented from being influenced due to the deformation of the bionic blade when the bionic centrifugal wind wheel runs at a high speed, and the superposition of noise can be avoided due to the inconsistent radius of the outlet of the bionic blade, so that the noise is further reduced.
Compared with the prior art, the invention has the beneficial technical effects that:
the bionic molding die can realize the integral injection molding of the bionic centrifugal wind wheel, increases the molding space of the bionic centrifugal wind wheel, has short molding process period and improves the production efficiency, and because the bionic centrifugal wind wheel does not need to be welded and molded separately, the integral structural strength of the bionic centrifugal wind wheel is ensured, and meanwhile, the material at the local position can be reduced on the premise of ensuring the sufficient local strength of the bionic centrifugal wind wheel, thereby reducing the production cost and realizing the characteristics of high efficiency, low noise and low cost of the centrifugal wind wheel.
Drawings
FIG. 1 is a schematic illustration of an embodiment of the present invention for injecting a gum material;
FIG. 2 is a schematic isometric view of an embodiment of the invention after cooling of the injected compound;
FIG. 3 is a schematic front view of an embodiment of the present invention with respect to FIG. 2;
FIG. 4 is a schematic cross-sectional view of the embodiment of the invention shown in FIG. 3C-C;
FIG. 5 is an isometric view of an embodiment of the invention after step 2;
FIG. 6 is a schematic front view of an embodiment of the present invention with respect to FIG. 5;
FIG. 7 is a schematic cross-sectional view of the embodiment of the invention shown in FIG. 6D-D;
FIG. 8 is an isometric view of an embodiment of the invention after step 3;
FIG. 9 is a schematic front view of an embodiment of the present invention with respect to FIG. 8;
FIG. 10 is a schematic cross-sectional view of E-E in FIG. 9 in accordance with an embodiment of the invention;
FIG. 11 is a schematic top view of the embodiment of the invention with respect to FIG. 8;
FIG. 12 is an isometric view of an embodiment of the invention after step 4;
FIG. 13 is a schematic front view of an embodiment of the present invention with respect to FIG. 12;
FIG. 14 is a schematic top view of the embodiment of the invention with respect to FIG. 12;
FIG. 15 is a schematic diagram of the relative positional relationship between a top block and a bionic centrifugal wind wheel according to an embodiment of the present invention;
FIG. 16 is a schematic plan view of a bionic centrifugal wind wheel according to an embodiment of the invention;
FIG. 17 is an isometric view of a bionic centrifugal rotor according to an embodiment of the invention;
FIG. 18 is a schematic cross-sectional view of F-F in FIG. 16 in accordance with an embodiment of the invention;
FIG. 19 is a schematic cross-sectional view of a bionic blade according to an embodiment of the invention at G-G in FIG. 16;
fig. 20 is a simplified schematic plan view of a centrifugal fan according to an embodiment of the invention.
Wherein, the technical characteristics that each reference sign indicates are as follows:
1. Wheel cover; 2. a wheel disc; 3. bionic blades; 4. a mounting hole; 5. circumferential reinforcing ribs; 6. radial reinforcing ribs; 7. a balancing piece; 8. a rounded corner structure; 9. a glue inlet; 10. a first slider; 11. a second slider; 12. a third slider; 13. limiting guide posts; 14. a top block; 15. an exhaust hole; 31. a first owl airfoil profile; 32. gull airfoil blade profile; 33. a second owl airfoil profile; 34. a leading edge; 35. a trailing edge; 36. chord length.
Detailed Description
The present invention will be further described in detail with reference to the following examples, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent, but the scope of the present invention is not limited to the following specific examples.
Referring to fig. 1-20, the embodiment discloses a bionic molding die applied to a bionic centrifugal wind wheel, which comprises a wheel disc molding piece, a wheel cover molding piece and a plurality of bionic blade molding pieces, wherein the wheel disc molding piece and the wheel cover molding piece are arranged at intervals, the wheel disc molding piece is provided with a plurality of glue inlets 9 which are arranged at intervals in the circumferential direction, and the bionic blade molding pieces are arranged between the wheel disc molding piece and the wheel cover molding piece and are arranged at intervals in the circumferential direction;
The bionic blade forming part sequentially comprises a first sliding block 10, a second sliding block 11, a third sliding block 12 and a limiting guide post 13 which are in sliding connection with each other in the direction from the wheel disc forming part to the wheel cover forming part, specifically, the first sliding block 10 is in radial sliding connection with a centrifugal wind wheel of the second sliding block 11 along the direction, the second sliding block 11 is radially connected with the centrifugal wind wheel of the third sliding block 12 along the direction, the third sliding block 12 and the limiting guide post 13 are in sliding connection along the axial direction of the limiting guide post 13, the limiting guide post 13 plays a role of guiding and limiting the third sliding block 12, the wheel disc forming part, the first sliding block 10, the second sliding block 11 and the wheel cover forming part form a forming space of the centrifugal wind wheel, the wheel disc forming part, the first sliding block 10, the second sliding block 11 and the wheel cover forming part are in radial sliding connection with the shape formed by the bionic centrifugal wind wheel 2, the wheel cover 1 and two adjacent blades 3, the bionic blade forming part is also in sliding connection with the first sliding block 12 and the third sliding block 12 along the axial direction, and the second sliding guide post 10 and the third sliding guide post 12 are in radial direction, and the bionic blade forming part is in radial connection with the third sliding part, and the third sliding part is in the direction, and the first sliding part is in the direction, and the second sliding part is in the direction along the direction, and the second sliding part.
Not shown in the drawings, the driving modes of the first driving member, the second driving member and the third driving member are not limited, so long as the first driving member, the second driving member and the third driving member can respectively drive the first slider 10, the second slider 11 and the third slider 12 to move, for example, the first driving member, the second driving member and the third driving member include driving structures such as an oil cylinder, an air cylinder, an electric cylinder or a motor.
Further, in order to realize the guiding function of the limiting guide post 13 on the third slider 12, a stepped hole is formed in the third slider 12, the limiting guide post 13 includes a limiting post and a guide post, one end of the limiting post is fixedly connected with one end of the guide post coaxially, the diameter of the limiting post is larger than that of the guide post, the guide post and the limiting post are all arranged in the stepped hole in a penetrating manner, the diameter of the guide post is matched with that of the stepped hole, when the third driving piece drives the third slider 12 to move along the axial direction of the limiting guide post 13, the guide post plays a guiding role on the third slider 12, and when the end face of the limiting post collides with the end face of the stepped hole, the third slider 12 is limited to move further, and the limiting post plays a limiting role on the third slider 12
Further, the bionic centrifugal wind wheel comprises a plurality of mounting holes 4 which are arranged at intervals along the circumferential direction, the diameter of the center of the glue inlet 9 is smaller than or equal to that of the center of the mounting hole 4, when the diameter of the center of the glue inlet 9 is smaller than that of the center of the mounting hole 4, the formed bionic centrifugal wind wheel is located at the weak position of the glue inlet 9 and is located at the mounting stress position of the mounting hole 4 as far as possible, and excessive stress caused to the weak position of the glue inlet 9 when the bionic centrifugal wind wheel is mounted is avoided, so that the bionic centrifugal wind wheel is damaged.
Further, the wheel cover forming member is provided with a plurality of top blocks 14 which are arranged at intervals along the circumferential direction, the top blocks 14 are arranged between two adjacent glue inlets 9 along the circumferential direction, the top blocks 14 are provided with exhaust holes 15, namely, the exhaust holes 15 are arranged at the positions of the melting lines at the glue inlet ends, and in the process of glue flowing, the exhaust holes 15 can discharge the gas extruded by the glue, so that the glue flows more smoothly, and the glue at the positions of the melting lines at the glue inlet ends can be well fused into a whole, so that the strength of the bionic centrifugal wind wheel at the positions of the melting lines is improved; if the vent hole 15 is not formed, gas is continuously accumulated in the flowing process of the sizing material, when the sizing material flows to the welding line position of the sizing material feeding end, the sizing material cannot be fused at the welding line position of the sizing material feeding end under the influence of gas pressure, so that the strength of the bionic centrifugal wind wheel at the welding line position is reduced.
The embodiment also discloses an integral injection molding method of the bionic centrifugal wind wheel, which adopts the bionic molding die to carry out integral injection molding, and comprises the following steps:
step 1: referring to fig. 1, glue is injected from the glue inlet 9;
Step 2: referring to fig. 2-7, after the sizing material is cooled, a bionic centrifugal wind wheel is formed, the bionic centrifugal wind wheel comprises a wheel cover 1, a wheel disc 2 and a plurality of bionic blades 3 arranged between the wheel cover 1 and the wheel disc 2 at intervals along the circumferential direction, in a section perpendicular to the axis of the bionic centrifugal wind wheel, the front edge 34 of the bionic blade 3 attached to the suction surface by the first sliding block 10 is a direction a along the outward tangent line of the suction surface, the point of the side surface attached to the suction surface by the first sliding block 10, closest to the axis of the bionic centrifugal wind wheel, is an inner side point a1, the point of the side surface attached to the suction surface by the second sliding block 11, closest to the axis of the bionic centrifugal wind wheel, is an inner side point a2, the circle in which the inner side point a1 is located is a circle O1, the circle in which the contact point b is located is a circle O2, the intersection point of the direction a and the circle O2 is a k1, the point of the contact point b, the contact point b is a perpendicular to the contact point k2 is a distance between the inner side point a and the first sliding block 1 and the axis of the bionic centrifugal wind wheel, and the first sliding block 1 is a distance L1, and the distance between the first sliding block 1 and the first sliding block 1 is a distance between the first driving part and the first driving part 1 and the first driving part and the first sliding block is 1;
Step 3: referring to fig. 8-11, after the axis of the limit guide post 13 faces the first slider 10, the direction of the axis of the limit guide post 13 is the direction B, after the first slider 10 moves by the distance L1, in the section perpendicular to the axis of the bionic centrifugal wind wheel, the angle between the projection of the direction B in the plane Z and the axis of the bionic centrifugal wind wheel is α1, 0.6× [ (R2-R1)/H1 ], the circle in which the inner point a1 is located is a circle O3, the distance between the inner point a1 and k1 is R3, the angle between the projection of the direction B in the section and the straight line perpendicular to the direction a is α2, the angle between the projection of the direction B in the plane Z and the axis of the bionic centrifugal wind wheel is α1, and the distance between 0.8× [ (R2-R1)/H1 ] [ (R3/W1)/H1 ], the second slider is driven by the second bionic wind wheel is further separated from the first slider 11, and the second bionic wind wheel is further driven by the distance of the second slider is further separated from the first slider 11;
Step 4: referring to fig. 12-14, after the first slider 10, the second slider 11, and the third slider 12 move by a distance L2, the circle corresponding to the outer diameter of the bionic centrifugal wind wheel is a circle O4, the circle at which the inner point a2 is located is a circle O5, the intersection point of the direction a and the circle O4 is k3, the distance between the inner point a2 and k3 is R4, and the second driving member drives the second slider 11 and the first slider 10 to move by a distance L3 along the direction a until the bionic centrifugal wind wheel is completely separated from the bionic centrifugal wind wheel;
Step 5: and taking down the bionic centrifugal wind wheel.
Further, 0.8xR1 is less than or equal to L1 and less than or equal to 1.2xR1, 0.8xH2 is less than or equal to 1.2xH2 and less than or equal to 1.2xH2 1, 0.8xR4 is less than or equal to L3 and less than or equal to 1.5xR4, in step 2, the moving process of the first sliding block 10 is ensured to leave the bionic blade preliminarily, in step 3, the situation that collision interference is caused between the moving process of the first sliding block 10 and the wheel disc 2 is avoided, and in step 4, the first sliding block 10 and the second sliding block 11 are ensured to be completely separated from the bionic centrifugal wind wheel.
The bionic molding die is further provided with a wheel disc 2 waterway, a bionic blade 3 waterway and a wheel cover 1 waterway which are arranged in parallel, in the process of injecting the sizing material in the step 1, the wheel disc 2 waterway, the bionic blade 3 waterway and the wheel cover 1 waterway are sequentially filled with water, the water temperature in the wheel disc 2 waterway, the bionic blade 3 waterway and the wheel cover 1 waterway is sequentially increased, the temperature of the sizing material from a sizing material inlet 9 to the sizing material inlet end is gradually reduced along with the flowing of the sizing material, the fluidity is gradually reduced, the injection molding effect is reduced, and in order to ensure the fluidity of the sizing material, the water temperature in the wheel disc 2 waterway, the bionic blade 3 waterway and the wheel cover 1 waterway are separately controlled, the fluidity of the sizing material is kept, the injection molding effect is ensured, the internal temperature of a product is uniform, the deformation is reduced, and the internal stress is reduced.
The embodiment also discloses a bionic centrifugal wind wheel, which is manufactured by adopting the integral molding injection molding method, wherein the bionic centrifugal wind wheel comprises a wheel cover 1, a wheel disc 2 and a plurality of bionic blades 3, the tops of the bionic blades 3 are connected with the wheel cover 1, the blade roots of the bionic blades 3 are connected with the wheel disc 2, the bionic blades 3 are arranged at intervals along the circumferential direction of the wheel disc 2, the blade profile of the bionic blades 3 sequentially comprises a first wing-shaped blade profile 31, a gull wing-shaped blade profile 32 and a second wing-shaped blade profile 33 from the top to the blade roots along the axial direction, the pressure surface line bends of the front edges of the first wing-shaped blade profile 31 and the second wing-shaped blade profile 33 are larger, and the pressure surface line bends of the middle parts and the rear edges are smoother; the curve of the pressure surface profile in the middle of the gull airfoil profile 32 is larger, the pressure surface profiles of the front edge and the rear edge are smoother, the thickness of the bionic blade 3 is increased from the front edge 34 to the rear edge 35 and then reduced, the maximum thickness of the bionic blade 3 is positioned at the chord length 36 of 20% -50% of the direction of the bionic blade 3 from the front edge 34 to the rear edge 35 along the chord length 36, the chord length 36 of the bionic blade 3 refers to the straight line formed by connecting the front edge 34 and the rear edge 35 of the bionic blade 3, and the thicknesses of the front edges 34 of the first and second owl airfoil profiles 31 and 33 are larger than the thickness of the front edge 34 of the gull airfoil profile 32.
According to the bionic blade 3 disclosed by the invention, the bionic blade 3 comprises the first wing-shaped blade profile 31, the gull wing-shaped blade profile 32 and the second wing-shaped blade profile 33 which are formed by fitting, the thickness of the bionic blade 3 is firstly increased and then reduced from the front edge 34 to the rear edge 35, the maximum thickness of the bionic blade 3 is positioned at the chord length 36 of 20% -50% of the bionic blade 3 along the chord length 36 from the front edge 34 to the rear edge 35, the efficiency of the bionic centrifugal wind wheel can be improved, the noise of the bionic centrifugal wind wheel can be reduced, the aerodynamic performance of the bionic centrifugal wind wheel can be ensured, the thicknesses of the front edges 34 of the first wing-shaped blade profile 31 and the second wing-shaped blade profile 33 are both larger than those of the front edges 34 of the gull wing-shaped blade profile 32, and the blade profile of the bionic blade 3 can distribute more materials at the connection positions of the front edges 34 of the bionic blade 3 and the wheel cover 1 and the wheel disc 2 on the basis of ensuring the bionic centrifugal wind wheel performance, so that the efficiency of the bionic centrifugal wind wheel cover 3 and the bionic wind wheel cover 1 and the bionic wind wheel cover 2 can be improved, and the normal running stress of the bionic wind wheel can be avoided, and the normal running stress is even reduced.
Further, the first owl airfoil profile 31 and the second owl airfoil profile 33 have the greatest thickness, are respectively positioned at the chord length 36 of the first owl airfoil profile 31 and the second owl airfoil profile 33 from the front edge 34 to the rear edge 35, and are positioned at the positions near the wheel cover 1 and the wheel disc 2, the first owl airfoil profile 31 and the second owl airfoil profile 33 can effectively reduce the generation and development of vortex in a flow channel, and reduce the pressure arteries of the front edge 34 of the first owl airfoil profile 31 and the second owl airfoil profile 33, so that the noise of the centrifugal wind wheel can be reduced, the thickness of the first owl airfoil profile 31 and the second owl airfoil profile 33 is thicker at the position close to the front edge 34, namely, the joint area of the front edge 34 of the bionic blade 3 and the wheel cover 1 and the wheel disc 2 is increased, the connection area of the front edge of the bionic blade 3 and the wheel cover 1 and the bionic blade 2 is improved, the stress of the bionic blade 3 and the bionic blade 2 is reduced, and the stress of the bionic blade 3 and the bionic blade 2 is reduced, and the equivalent stress table is reduced, and the stress of the bionic blade 3 and the bionic blade 3 is reduced from the strength of the surface table is reduced, and the equivalent stress table is reduced, and the stress of the bionic blade is shown by the table 2, and the stress table is shown by the table 2.
TABLE 1 stress test data sheet for blade leading edge and shroud and disk
| Stress between the leading edge of the blade and the shroud | Stress between the leading edge of the blade and the disk | |
| Conventional blade | 157MPa | 109MPa |
| Bionic blade | 121MPa | 77MPa |
| Stress amplitude reduction | 22.90％ | 29.30％ |
Specifically, the first owl airfoil profile 31 and the second owl airfoil profile 33 have the greatest thickness, and are respectively located at a chord length 36 of 25% of the first owl airfoil profile 31 and the second owl airfoil profile 33 along a chord length 36 from a front edge 34 to a rear edge 35, and it is found through experiments that the noise reduction effect of the first owl airfoil profile 31 and the second owl airfoil profile 33 is best when the first owl airfoil profile 31 and the second owl airfoil profile 33 are located at a chord length 36 of 25% of the first owl airfoil profile 31 and the second owl airfoil profile 33 along a chord length 36 from the front edge 34 to the rear edge 35.
Further, the maximum thickness dimension of the first owl airfoil profile 31 and the second owl airfoil profile 33 is W1, the chord lengths 36 of the first owl airfoil profile 31 and the second owl airfoil profile 33 are L, W1 is 0.05×l or less and 0.1×l or less, and the portions of the first owl airfoil profile 31 and the second owl airfoil profile 33 close to the front edge 34 are relatively rounded, so that the present invention is applicable to various working conditions.
Further, the maximum thickness of the gull airfoil profile 32 is located at the chord length 36 of 30% -50% of the direction from the front edge 34 to the rear edge 35 of the gull airfoil profile 32 along the chord length 36, and the gull airfoil profile 32 has high lift force in the middle of the flow channel of the bionic centrifugal wind wheel, and the suction surface of the gull airfoil profile 32 can not generate flow separation and vortex, so that the bionic centrifugal wind wheel efficiency can be improved, and the requirement of the middle part of the bionic blade 3 in the axial direction on strength is not high, and the thickness of the gull airfoil profile 32 close to the middle part and deviated to the front edge 34 is thinner than that of the first and second wing profiles 31 and 33, so that the aerodynamic performance of the bionic centrifugal wind wheel can be kept at a higher level.
Specifically, the maximum thickness of the gull airfoil profile 32 is located at a chord length 36 of 40% of the gull airfoil profile 32 along a chord length 36 from the front edge 34 to the rear edge 35, and experiments prove that when the maximum thickness of the gull airfoil profile 32 is located at the chord length 36 of 40% of the gull airfoil profile 32 along the chord length 36 from the front edge 34 to the rear edge 35, the gull airfoil profile 32 has the best effect, so that the aerodynamic performance of the bionic centrifugal wind wheel can be exerted to the maximum extent.
Further, the leaf heights of the first owl wing-shaped leaf profile 31 and the second owl wing-shaped leaf profile 33 are respectively 30% -40% of the leaf height of the bionic leaf 3, and the leaf height of the seagull wing-shaped leaf profile 32 is 20% -30% of the leaf height of the bionic leaf 3.
Further, the trailing edge 35 molded line of the bionic blade 3 is in a C shape, so that the overall structural strength of the bionic centrifugal wind wheel can be further enhanced, the deformation of the trailing edge 35 of the bionic blade 3 can be reduced, the phenomenon that the pneumatic performance of the bionic centrifugal wind wheel is affected due to the deformation of the bionic blade 3 when the bionic centrifugal wind wheel runs at a high speed is avoided, and due to the fact that the outlet radiuses of the bionic blade 3 are inconsistent, the superposition of noise can be avoided, and the noise is further reduced.
Further, the thickness of the trailing edge 35 of the bionic blade 3 is not less than 2mm, the thicknesses of the trailing edge 35 of the first low-power wing profile 31, the gull wing profile 32 and the second low-power wing profile 33 are adjusted, and the thickness of the trailing edge 35 of the bionic blade 3 is not less than 2mm, so that the manufacturing process requirement of the bionic centrifugal wind wheel is met.
Further, the tangent line that rim plate 2 is located the air-out end extreme point is export tangent line, rim plate 1 deviates from the one end of rim plate 2 is the air inlet end, rim plate 1 with interval between the rim plate 2 outside is the air-out end, export tangent line is theta with the contained angle of horizontal direction, rim plate 1's external diameter is Ds, rim plate 2's internal diameter is Dr, rim plate 2's external diameter is Dh, rim plate 2's height is H, dh is less than or equal to Ds, and in numerical value, 2H/(Dh-Dr) is less than or equal to tan theta, is favorable to the high-efficient acting of bionic centrifugal wind wheel in the system, and conventional centrifugal wind wheel air current level flows out, receives the hindrance influence of system wall surface, compares single fan wind tunnel test result, and test amount of wind reduces 10%, efficiency reduction 12%, and this embodiment compares conventional centrifugal wind wheel slant air-out in same system, and efficiency improves at least 4% in parallel operation, and a plurality of bionic centrifugal wind wheel is the bionic effect each other between the bionic wind wheel.
Further, the molded line of the wheel disc 2 is a straight line or an arc line protruding towards the flow channel, so that the overall height of the bionic blade 3 is reduced, the strength and rigidity of the bionic blade 3 are improved, and deformation and even breakage caused by overlarge blade height of the bionic blade 3 are avoided.
Further, be equipped with two at least circumference strengthening ribs 5 and a plurality of radial strengthening rib 6 on the diapire of rim 2 deviating from rim 1, circumference strengthening rib 5 along radial direction interval setting, radial strengthening rib 6 along circumference interval setting, just circumference strengthening rib 5 with radial strengthening rib 6 interconnect, the external diameter of circumference strengthening rib 5 is all less than the external diameter of rim 2, and be equipped with a plurality of balancing piece 7 on the biggest circumference strengthening rib 5 of diameter, circumference strengthening rib 5 reaches radial strengthening rib 6 not only can effectual improvement rim 2's intensity, moreover radial strengthening rib 6 can drive the air current around when bionical centrifugal wind wheel rotates to produce the radiating effect, play the cooling effect to motor 4 rotor, circumference strengthening rib 5 sets up rim 2 deviates from on rim 1's the diapire, set up promptly on rim 2's the non-working face, compare the setting and be in rim 2's the outside, still has improved circumference strengthening rib 5 highly can be adjusted the space and is equipped with a plurality of balancing piece 7 on the circumference strengthening rib 5, and the bionical wind wheel can drive the intensity of air current when bionical centrifugal wind wheel rotates, and the cost is reduced, and the bionical wind wheel is beneficial to the local air-flow is reduced, and the cost is effectively reduced.
Further, the number of the bionic blades 3 is N1, the number of the radial reinforcing ribs 6 is N2, N1 is less than or equal to N2 and less than or equal to 4×N1, and the number of the circumferential reinforcing ribs 5 is not more than 3, so that the production materials of the radial reinforcing ribs 6 and the circumferential reinforcing ribs 5 are reduced and the production cost is reduced under the conditions of ensuring the foundation of effectively reinforcing the structural strength of the wheel disc 2and meeting the heat dissipation.
Further, be equipped with fillet structure 8 between the leaf top of bionic blade 3 with wheel cover 1, bionic blade 3's blade root with be equipped with fillet structure 8 between the rim plate 2, on the one hand, fillet structure 8 further strengthen bionic blade 3 with wheel cover 1 reaches the intensity of rim plate 2 junction weakens the deformation of rim plate 2 in the post-injection cooling stage, on the other hand, fillet structure 8 can reduce the air current and flow through the peak noise that this produced, further noise reduction for tone quality when bionic centrifugal wind wheel operates is better.
Specifically, the radius of curvature of the fillet structure 8 is r, the outer diameter of the bionic centrifugal wind wheel is Ds, r is more than or equal to 0.005×Ds and less than or equal to 0.035×Ds, and under the condition that the fillet structure 8 plays a role in increasing strength, the excessive flow passage area of the bionic centrifugal wind wheel is prevented from being occupied, so that the effect on the efficiency of the bionic centrifugal wind wheel is prevented; if r is less than 0.005 xds, the fillet structure 8 occupies a small flow passage area of the bionic centrifugal wind wheel, but the effect of increasing the strength of the fillet structure 8 is poor; if r is greater than 0.005 xDs, the fillet structure 8 can effectively increase the structural strength of the bionic centrifugal wind wheel, but the fillet structure 8 occupies too much flow passage area of the bionic centrifugal wind wheel, and reduces the efficiency of the bionic centrifugal wind wheel.
Further, the cross-sectional profile of the fillet structure 8 includes an arc or spline curve.
Variations and modifications to the above would be obvious to those of ordinary skill in the art to which the invention pertains, based on the foregoing disclosure and teachings. Therefore, the invention is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the invention should be also included in the scope of the claims of the invention. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the invention in any way.
Claims (6)
1. The integral injection molding method of the bionic centrifugal wind wheel is characterized by adopting a bionic molding die to carry out integral injection molding, wherein the bionic molding die comprises a wheel disc molding piece, a wheel cover molding piece and a plurality of bionic blade molding pieces, wherein the wheel disc molding piece and the wheel cover molding piece are arranged at intervals, the wheel disc molding piece is provided with a plurality of glue inlets (9) which are arranged at intervals in the circumferential direction, and the bionic blade molding pieces are arranged between the wheel disc molding piece and the wheel cover molding piece and are arranged at intervals in the circumferential direction; the bionic blade forming part sequentially comprises a first sliding block (10), a second sliding block (11), a third sliding block (12) and a limiting guide post (13) which are connected in a sliding manner in the direction from the wheel disc forming part to the wheel cover forming part, wherein the wheel disc forming part, the first sliding block (10), the second sliding block (11) and the wheel cover forming part form a forming space of a bionic centrifugal wind wheel, and the bionic blade forming part further comprises a first driving part, a second driving part and a third driving part which are respectively connected with the first sliding block (10), the second sliding block (11) and the third sliding block (12), and the axis of the limiting guide post (13) and the axis of the bionic centrifugal wind wheel are in different-plane straight lines; the integral injection molding method comprises the following steps:
step 1: injecting glue stock from the glue inlet (9);
Step 2: after cooling, a bionic centrifugal wind wheel is formed, the bionic centrifugal wind wheel comprises a wheel cover (1), a wheel disc (2) and a plurality of bionic blades (3) arranged between the wheel cover (1) and the wheel disc (2) at intervals along the circumferential direction, in a section perpendicular to the axis of the bionic centrifugal wind wheel, the front edge (34) of the bionic blade (3) attached to the suction surface by the first sliding block (10) is a direction A along the outward tangent line of the suction surface, the closest point of the side surface attached to the suction surface by the first sliding block (10) to the axis of the bionic centrifugal wind wheel is an inner side point a1, the closest point of the side surface attached to the suction surface by the second sliding block (11) to the axis of the bionic centrifugal wind wheel is an inner side point a2, the furthest point of the inner side point a1 is a circle O1, the circle on which the contact point b is located is a circle O2, the intersection point of the direction A and the suction surface is a circle O2, the closest point of the contact point of the first sliding block (10) and the suction surface is a vertical point 1, and the distance of the contact point A is a distance between the first sliding block and the first sliding block (1) and the first sliding block 1 is a distance R1;
Step 3: after the axis of the limit guide column (13) faces the direction of the first sliding block (10) to be the direction B, the first sliding block (10) moves by the distance L1, in the section perpendicular to the axis of the bionic centrifugal wind wheel, the inner point a1 intersects with the suction surface at a point c along a straight line perpendicular to the direction A, the distance between the inner point a1 and the suction surface is W1, the circle where the inner point a1 is located is a circle O3, the distance between the inner point a1 and the k1 is R3, and the included angle between the projection of the direction B in the section and the straight line perpendicular to the direction A is The included angle between the projection of the direction A in the plane Z and the bionic centrifugal wind wheel axis is/>Then/>，The third driving piece drives the third sliding block (12), the second sliding block (11) and the first sliding block (10) to move along the direction B by a distance L2;
Step 4: after the first slider (10), the second slider (11) and the third slider (12) move by a distance L2, a circle corresponding to the outer diameter of the bionic centrifugal wind wheel is a circle O4, a circle where the inner side point a2 is located is a circle O5, an intersection point of the direction A and the circle O4 is k3, a distance between the inner side point a2 and k3 is R4, and the second driving piece drives the second slider (11) and the first slider (10) to move by a distance L3 along the direction A;
Step 5: taking down the bionic centrifugal wind wheel;
，/>，/>。
2. The integrated injection molding method according to claim 1, wherein the bionic molding die is further provided with a wheel disc waterway, a bionic blade waterway and a wheel cover waterway which are arranged in parallel, water is introduced into the wheel disc waterway, the bionic blade waterway and the wheel cover waterway in the process of injecting the sizing material in step 1, and water temperatures in the wheel disc waterway, the bionic blade waterway and the wheel cover waterway are sequentially increased.
3. The integral injection molding method according to claim 1, wherein the bionic centrifugal wind wheel comprises a plurality of mounting holes (4) which are arranged at intervals along the circumferential direction, and the diameter of the center of the glue inlet (9) is smaller than the diameter of the center of the mounting hole (4).
4. The integral injection molding method according to claim 1, wherein the wheel cover molding is provided with a plurality of top blocks (14) which are arranged at intervals along the circumferential direction, the top blocks (14) are arranged between two adjacent glue inlets (9) along the circumferential direction, and the top blocks (14) are provided with exhaust holes (15).
5. The bionic centrifugal wind wheel is characterized by being manufactured by adopting the integrated injection molding method according to any one of claims 1-4, and comprises a wheel cover (1), a wheel disc (2) and a plurality of bionic blades (3), wherein the tops of the bionic blades (3) are connected with the wheel cover (1), the blade roots of the bionic blades (3) are connected with the wheel disc (2), and the bionic blades (3) are arranged at intervals along the circumferential direction of the wheel disc (2);
The blade profile of the bionic blade (3) sequentially comprises a first-powered wing profile (31), a gull wing profile (32) and a second-powered wing profile (33) from the blade top to the blade root along the axial direction, the thickness of the bionic blade (3) is increased from a front edge (34) to a rear edge (35) and then reduced, the maximum thickness of the bionic blade (3) is positioned at the chord length (36) of the bionic blade (3) along the chord length (36) from the front edge (34) to the rear edge (35) in the direction of 20% -50%, and the thicknesses of the front edges (34) of the first-powered wing profile (31) and the second-powered wing profile (33) are both larger than the thickness of the front edge (34) of the gull wing profile (32);
The first owl airfoil profile (31) and the second owl airfoil profile (33) have the greatest thickness and are respectively positioned at a chord length (36) of 20-30% of the first owl airfoil profile (31) and the second owl airfoil profile (33) along the chord length (36) from the front edge (34) to the rear edge (35);
the maximum thickness of the gull airfoil profile (32) is located at a chord length (36) of 30% -50% of the gull airfoil profile (32) along the chord length (36) from the leading edge (34) to the trailing edge (35).
6. Bionic centrifugal wind wheel according to claim 5, wherein the trailing edge (35) profile of the bionic blade (3) is "C" shaped.
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| EP2168744A1 (en) * | 2008-09-29 | 2010-03-31 | Ifp | Method for structuring internal components for rotodynamic rotating machines |
| CN112253537A (en) * | 2020-11-19 | 2021-01-22 | 泛仕达机电股份有限公司 | Bionic axial flow wind wheel |
| CN114427543A (en) * | 2022-01-17 | 2022-05-03 | 泛仕达机电股份有限公司 | Bionic centrifugal wind wheel and centrifugal fan |
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| US9869297B2 (en) * | 2015-05-07 | 2018-01-16 | General Electric Company | Attachment method and system to install components, such as vortex generators, to a wind turbine blade |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2168744A1 (en) * | 2008-09-29 | 2010-03-31 | Ifp | Method for structuring internal components for rotodynamic rotating machines |
| CN112253537A (en) * | 2020-11-19 | 2021-01-22 | 泛仕达机电股份有限公司 | Bionic axial flow wind wheel |
| CN114427543A (en) * | 2022-01-17 | 2022-05-03 | 泛仕达机电股份有限公司 | Bionic centrifugal wind wheel and centrifugal fan |
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